第一次上机
1.
#include <stdio.h>
int main()
{
int a,b,sum;
a = 123;
b = 456;
sum = a + b;
printf("sum is %d\n",sum);
return 0;
}
2.
#include <stdio.h>
int main()
{ char c1,c2;
c1=97;
c2=98;
printf("c1=%c,c2=%c\n",c1,c2);
printf("c1=%d,c2=%d\n",c1,c2);
return 0;
2改.
#include <stdio.h>
int main()
{ char c1,c2;
c1=197;
c2=198;
printf("c1=%c,c2=%c\n",c1,c2);
printf("c1=%d,c2=%d\n",c1,c2);
return 0;
}
3.
#include <stdio.h>
#include <math.h>
int main()
{ double x,y,z;
scanf("%lf%lf",&x,&y);
z=x + 1/fabs(y);
printf("%d\n",(int)z);
printf("%15.6f\n",z);
printf("%e\n",z);
return 0;
}

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